Volvo said Monday that it would sell Uber tens of thousands of luxury sport utility vehicles between 2019 and 2021 outfitted with the Swedish automaker's safety, redundancy and core autonomous driving technologies. Uber will then add its own self-driving technology to the autonomous taxi fleet.

Volvo said Monday that it would sell Uber tens of thousands of luxury sport utility vehicles between 2019 and 2021 outfitted with the Swedish automaker's safety, redundancy and core autonomous driving technologies. Uber will then add its own self-driving technology to the autonomous taxi fleet.

Jeff Miller, head of auto alliances at Uber, said in a statement that the agreement put Uber on a path toward "mass produced self-driving vehicles at scale."

The Wall Street Journal reported that the fleet described in the agreement would number 24,000 vehicles, though an Uber spokesperson said the figure is a "general framework" and not necessarily the actual number of cars that will be purchased. It's unclear when exactly the vehicles will hit the road.